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An Electronically Tunable 28-34 GHz 2-D Steerable Leaky Wave Antenna

Mahdi Alesheikh, Md Hedayatullah Maktoomi, Soheil Saadat, Hamidreza Aghasi

Abstract

In this paper, a 2-D beam steering mm-wave antenna based on the leaky wave configuration is presented. Microstrip leaky wave antennas are known to exhibit beam rotation by changing the frequency. In this work, the microstrip leaky wave antenna is adopted and co-integrated with electronically tunable board components that periodically load the antenna. By independent control of variable capacitors and diodes, single-frequency 2-D beam steering across the bandwidth is achieved. The proposed antenna is fabricated in Rogers printed circuit board technologies and the simulation results exhibit a peak realized gain of 8 dBi, radiation bandwidth of 28-34 GHz, radiation efficiency of more than 80%, and more than 90$^\circ$ and 70$^\circ$ of beam rotation in the $φ$ and $θ$ directions.

An Electronically Tunable 28-34 GHz 2-D Steerable Leaky Wave Antenna

Abstract

In this paper, a 2-D beam steering mm-wave antenna based on the leaky wave configuration is presented. Microstrip leaky wave antennas are known to exhibit beam rotation by changing the frequency. In this work, the microstrip leaky wave antenna is adopted and co-integrated with electronically tunable board components that periodically load the antenna. By independent control of variable capacitors and diodes, single-frequency 2-D beam steering across the bandwidth is achieved. The proposed antenna is fabricated in Rogers printed circuit board technologies and the simulation results exhibit a peak realized gain of 8 dBi, radiation bandwidth of 28-34 GHz, radiation efficiency of more than 80%, and more than 90 and 70 of beam rotation in the and directions.
Paper Structure (4 sections, 4 figures)

This paper contains 4 sections, 4 figures.

Table of Contents

  1. Introduction
  2. Design of the Antenna
  3. Simulation results
  4. Conclusion

Figures (4)

  • Figure 1: (a) 3-Dimensional cross-section view of the proposed antenna, (b) backside view of $M_1$, (c) cross-section view of the design.
  • Figure 2: Impact of Q variation on the performance of the proposed antenna
  • Figure 3: Steering the beam in (a) $\theta$ and (b) $\phi$ directions as well as corresponding $\vec{E}$ profiles by altering the varactors and diode states at 31 GHz.
  • Figure 4: Rotation of beam at 32 GHz in the (up) $\theta$ axis and (bottom) $\phi$ axis.